Preventing theft of motor cars



4 AJuly 20,1926.A Y 1,593,165

J. M. FERGUSON ET AL PREVENTNG THEFT OF MOTOR CARS .Fild sept. 22 1924 lv; Fal?? 1061212/ @by y Patented July 20, 1926. i i STATE LQATENT FFlCE.

JOHN MALCOLM FERGUSON AND ARTHUR WLSON EVANS, OF SYDNEY, NEW SOUTHWALES, AUSTRALIA.

PREVENTING THEFT OF MOTOR CARS.

Application iiled September 22, 1924, Serial No. 739,181, and inAustralia. June 19, 1924.

This invention relates to motor cars and The spring of the plunger is soarranged Similar vehicles but more particularly refers that on thesevering of the lcontrol it autoto the prevention oi their use byunauthor` matically raises the plunger to allow ized persons. air toenter the induction pipe in large 5 Various devices have been proposedfor quantities and means is provided for posi- `60 rendering the theftof motor cars inipossitively holding the plunger in that position. bleor extremely difficult but have not been' ln the accompanying drawings:successful as their effect can generally be Figure 1 is a sectionalelevation of the neutralized in a short time by persons condevice, and lversant with the mechanism of the car. Figure 2 is an extendedperspective view 65 Now the object of this invention is to proshowing'the construction and arrangement vide a device which will renderunauthoroit the parts.

ized use of the car., if not impossible, an uii- The admission of theair to the induction dertaking requiring a considerable amount pipeLil-through the peripheral holes 3 in l5 ot ingenuity and time. thecylindrical inlet vessel 5 is controlled 70 A further object is toprovide a device for by the plunger G which is manipulated by thepurpose which during tho normal runmeans of the wire 7 enclosed in thesmall ning ot the car may be usefully used for tube S, the vessel 5being screwed into or admitting extra air to the engine. Furtherotherwise aliiXed to the induction pipe 4.

the device will not hinder the free movement The vessel 5 is alsoprovided with a cover 75 of the vehicle by hund, 9 towards which theplunger 6 unless re- Accordingly the invention consists in prostrainedby the wire 7 is pushed by the vidio@ un @Xtra oir device of Suo-h atypo spring 10 to allow air topass through the that it. normally tendsto remain fully openl holes 3. The cover 9 is recessed to receive andproviding; means whereby this devicelie lOOSely fitting llOOCl OI Sleevell WlllCll 80 may be looked in its open position and alsois providedwith holes 12 and ribs 13 to providing means whereby manipulation of@Jive it a rough Surface and Which is rotatthe device is renderedparticularly diiiicult. ably retained by the cap 14 which is aixed Thedevice consists of a cylindrical vesselv by means of screws l5 to thecover 9, the

o0 which is arranged to communicate with the heads of the screws beingprotected with a S5 induction pipe and which is provided with thickCoating of solder or the like 16. The a plunger and a number ofperipheral air Cap ld is provided with a central boss 17 inlet holes,the plunger being provided with which receives the tube 8 and allows thea spring which normally tends to withdraw wire 7 to pass to theplunger6. The necesit to allow air to pass to the induction pipe. sary movementis imparted to the wire by 90 The plunger is controlled in any well anywell known device 18 which is situated known manner from the instrumentboard where convenient, for example, on the inoi the ear where a devicefor locking it in v Stiulnent hoard 19 of the car and which is theopen'position is provided. -capable of being locked by a key 2O or 40Enveloping the inlet vessel is a sleeve EDV Other Well known device- 95provided with ribs or liutes and number of y ln operation the device 18is unlocked so holes and which is rotatably attached to it that theplunger 6 may be operated to cut by means of a cap securely fastenedthereto oli" the air supply in order to allow the enin such a manner asto render its 'removal gine to be started and the device is useddifficult and laborious, in the usual manner while running. When 10o Theapparatus is used for the supply of the car is left unattended theplunger 6 is eXtra air in the usual well known manner WhClllWH andlOClGCl ill that pOStOIl S0 and when ,the our is not in use the @Xtrathat it is not possible to start the engine.

air device is locked so that the induction Should the pipe 8 be cut thespring 10v 5o pipe is in full communication with the atwould act to openthe air holes 3 and because 105 mosphere thus rendering starting imposofthe loose manner in which the sleeve 11 sible and moreover by reason ofthe. loose is fitted the whole device could not be fixing of theenveloping sleeve and its conremoved without considerable trouble instruction it is exceedingly diilicult to preremoving the solder 16, thescrews 15 and vent the ingress of air. the cap 14. Moreover it would bedifficult 110 to prevent air reaching the holes 3 by reason of theconstruction of the hood il andthe irregular spaces lett between it andthe induction pipe.

As a Yfurther safeguard and to prevent manipulation by means of the'free end of the Wire a slot 21 is formed near the lower end of theplunger 6 and on 'the exterior of the cylinder 5 a spring ring 22.having .an end 2B inwardly projecting through the hole 24 is provided.llf the tube ,8 .and Wire lC? are cut, the plunger .6 is vforced upwardsby .the spring l0 until the .end 23 enters the slot 2l whereupon thelplunger vis secured so 'that .air holes .3 are uncovered. The plungercannot then be released .until .the 'Whole device is removed. ln .normaloperation for the purposes @of supplying eXtra nir the plunger is neverWithdrawn suiiiciently -to enable the spring 23 to enter the slot v21.

The device does not make .it absolutely impossible to start the engine,but the time .necessary to do so vvhe-n the device is 'fitted would .inmos-t cases prevent theft.

ln the .above description the `cap 14 is described .fixed in position bysere-Ws 1'5 and an `.overlying ring of solder. It is robvious lthat thiscap may .be secured in any Well known manner as, for example, by rivetsor yother equivalent devices.

Vile claim l. Apparatus for the purposes `specified Compris-ing finycombination with the indu'ction pipe of ya vehicle fengine "an extraair device yconnected with the induction .pipe vand :a loosely iittfingperforated sleeve `enveloping 'said device.

:2. The combi-nation with the :induction pipe of engine, of an .eXtraair device connected with :the induction pipe, means 'for locking saiddevice anda perforated rough- 'ened .sleeve 'enveloping :said device.

3. A device for the purposes specified including in combination With'theinduction pipe 'of fan engine, :an extra air device :adapted normally to.give 'full opening to the induction pipe, a rotatable perfor-ated'sleeve .surrounding said device, means for :securely retaining saidsleeve and means for locking said extra air device.

i. A =device for the purposes specified including in combination Withthe induction pipe of an engine, ian eXtra air apparatusadapted'norm'ally to maintain full communication between the inductionpipe and the atmosphere, a 'roughened perforated sleeve surrounding saiddevice, means for securely retaining said sleeve, means for operatingand 'locking said eXtra air appara- 'tus and means for automaticallyrendering Asaid .apparatus .inoperative upon the severvance of theconnection to the locking means.

5. A. device .for the purposes specified comprising in combination anextra air device Which .consists of a .cylindrical vessel in.commami'cation With the .induction pipe and liaving .peripheral .holestherein, a plunger adapted to be external-ly operated and a .springVadapted normally -to operate said plmiger to establishfullcommunication between the atmosphere and the vinduction pipe, aroughened perforated enveloping sleeve, means for securely retainingsaid sleeve,means for l'opcrafting and flocking said entr-a air :deviceand .means for automatically .rendering said plunger inoperative on theY.f-everan'cev :of the connect-ion to the locking means.

6. A device as claimed in claim v5, wherein the plunger' .is providedwith a circumferential groove zand Whe-rein the casing is provided with'a hole and `wherein the means for automatically render-ing the Yextraair device inoperative :includes a spring ring surrounding the casing,and having an inwardly projecting end passing through said :hole and:adapted for 'engagement with the circumferential groove in the plunger.

7,. Ari ali-rangement ofthe character described including fthecombination with the induction :manifold fof `an engine of an extra fairdevice in communication therewith and a protecting `sleeve 'surroundingthe device consisting 'of a cap-like body, the outer sur- :face fof'the'side Walls of which are provided with corrugati'ons Vvand with'opening-s, Yand means 'for :rotatably securing the 'cap-like bodyimposition.

58. arrangement fas claimed in claim 7, wherein the extra air deviceincludes a .cylindrical perforated vessel attached to the inductionpipe, and va cap Vclosing the upper end of said vessel and acting tosecure the -fs'l'eeive position.

te'stim'ony `whereof they have ailixed w their signatures.

-JHN MALG'GLM vFERGl-ISOHS. ARTHUR WILSON EVANS.

